high severity May 15, 2026 · 3 min read Unverified claim — what this is

Instituut voor de Nederlandse Listed by The Gentlemen Ransomware Group

If you are a customer of Instituut voor de Nederlandse, here’s what is being claimed, and what it would mean for you.

ivdnt.org rocketreach.co/instituut-voor-de-nederlandse-taal-profile_b45f686efc6979e6 It advances the study and preservation of Dutch through cutting-edge research, digital tools, and open-access resources covering vocabulary, grammar, dialects, and terminology. The institute curates authoritative references like the Algemene Nederlandse Spraakkunst for scholars, educators, and language enthusiasts worldwide
— from The Gentlemen’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

Instituut voor de Nederlandse Listed by The Gentlemen Ransomware Group

On May 14, 2026, the Dutch language institute Instituut voor de Nederlandse Taal appeared on the leak site of the ransomware group known as The Gentlemen. Internal files were allegedly exfiltrated during a ransomware attack, exposing data that could affect researchers, staff, partners, and anyone whose information was stored in the institute’s systems.

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What Public Reporting Shows

Public reporting indicates the institute, which maintains authoritative Dutch language resources including the Algemene Nederlandse Spraakkunst, had internal files stolen. The data was later listed on the group’s leak portal hosted via ransomware.live. No exact victim count has been disclosed, and the precise volume or sensitivity of the files remains unclear from available reporting. The breach follows the group’s typical pattern of exfiltrating data before demanding payment to prevent publication.

Why This Matters for You and Your Family

When an organization that holds personal or professional records suffers a breach, the information can spread far beyond its walls. If you have corresponded with the institute, contributed to its research, or had your name, email, or contact details appear in its files, that data may now be in the hands of criminals. For ordinary people and families, this often leads to follow-on scams, phishing attempts, or identity theft that can affect bank accounts, government services, or children’s online profiles. Credential leaks like this one frequently cascade into account takeovers across unrelated services where the same email and password are reused.

The Doxxing and Identity-Chain Implications

Stolen internal files frequently contain more than names and emails. They can include phone numbers, addresses, project notes, or references to family members and collaborators. Attackers combine these fragments with data from earlier breaches to build detailed profiles. Once a single handle or email is linked to your real identity, it becomes easier to locate social-media accounts, gaming profiles, or children’s online activity. This chaining effect turns one institutional breach into a persistent privacy problem that can expose your household for years.

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Report details & sourcing

Attributed to The Gentlemen · 1013 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed May 15, 2026

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

Threat-actor tracker

The Gentlemen — 1013 incidents tracked

Every breach we've attributed to The Gentlemen, in one running log. See who else they've hit →

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